Fitting a simple in car pc into my yaris

Hi there. I am a newbie and i have read through some of the posts here and most doesnt make sense. I am from the UK and i have a toyota yaris. I have a sony head unit with aux input, and what i would like to do is have a smallish pc fitted under the front seat of my passenger side, which i can use to watch dvds, listen to mp3's, watch avi's, maybe some games and look at pictures on etc. i'd like a dash mounted touch screen. can anyone sugest what kinda of equuipment i would need.

any links of actual products and simple instructions on howw to connect them into the car would be wonderful.

i'd need usb connections, sbuilt in sound card and a graphics card which will play a few games on it.

sorry if this post seems a bit simplistic, but as i said, im a complete beginer at the moment.

I also have yaris (well, echo, but same thing). Anyway, I don't think there is enough space under the passenger seat for anything other than a mini-itx system. Make sure you check the dimensions properly before you go out buying a system or anything.

thank you to those that posted with useful information. as for the others, why bother posting such childish posts. i am simply trying to find out specific information with my car, and how a pc would work within it. everyone has to start somewhere.

anyway, my main concern is power for the pc. ive seen dc to ac converters but am worried this may not be the best solution. as the yaris is a small car and only has a small battery and possibly small alternator. now ive seen that you can buy boards with a dc connector power supply. how are these wired into the car? is is simply a matter of plugging them into a cigarette lighter connection or wiring them into a 12v supply? as i said, i do apologise if this is to simplistic for some people, but id appriciate any seful information rather then the "cant understand how your so clueless" posts. grow up please.

I also have yaris (well, echo, but same thing). Anyway, I don't think there is enough space under the passenger seat for anything other than a mini-itx system. Make sure you check the dimensions properly before you go out buying a system or anything.

If you remove the Morex DC-DC power supply in the Procase 2677, you might fit the Yaris in there...

thank you to those that posted with useful information. as for the others, why bother posting such childish posts. i am simply trying to find out specific information with my car, and how a pc would work within it. everyone has to start somewhere.

I'd suggest as a place to start. The here at MP3car.com is also very helpful.

anyway, my main concern is power for the pc. ive seen dc to ac converters but am worried this may not be the best solution. as the yaris is a small car and only has a small battery and possibly small alternator. now ive seen that you can buy boards with a dc connector power supply. how are these wired into the car? is is simply a matter of plugging them into a cigarette lighter connection or wiring them into a 12v supply? as i said, i do apologise if this is to simplistic for some people, but id appriciate any seful information rather then the "cant understand how your so clueless" posts. grow up please.

The power supply in your desktop computer is an AC -> DC convertor. The household current is AC. The PC's electonics are all DC.
Your cars electrical system is DC. So there are some options here:
Many laptops and some micro-ATX power supplies have the ability to be powered by AC or DC, with the proper power supply, usually in the form of a 'power brick'. A setup like this would be the ideal for portability & security: remove the PC so it doesn't get stolen.
Another option is to use a power inverter. The general consensus on these is that they are less efficient and may require some engineering to accomplish specific things, such as having the PC power on when you start the car. There are many installs using them that work fabulously. They're also relatively inexpensive and can power any computer.
The last option is the DC-DC power supply. Opus and the Maestro Sproggy (DIY kit) are the two most popular options, but I'm seeing more & more pop up here and there.
These are ATX power supplies that take a fused line straight from the battery. The opus has a startup/shotdown circuit that will start when the car starts and delayed shut down when you turn off the car. Drawback? Opus units ain't cheap.